GB766610A - Improvements in or relating to magnetic duplicate sound recording units - Google Patents

Improvements in or relating to magnetic duplicate sound recording units

Info

Publication number
GB766610A
GB766610A GB34212/54A GB3421254A GB766610A GB 766610 A GB766610 A GB 766610A GB 34212/54 A GB34212/54 A GB 34212/54A GB 3421254 A GB3421254 A GB 3421254A GB 766610 A GB766610 A GB 766610A
Authority
GB
United Kingdom
Prior art keywords
sheets
magnetic
main record
relating
sound recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB34212/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB766610A publication Critical patent/GB766610A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

766,610. Duplicating magnetic records. HALFTERMEYER, R. Nov. 25, 1954 [Nov. 25, 1953], No. 34212/54. Class 40 (2). In a magnetic sound-recording unit for simultaneously recording sound on a main record 1 and on thin flexible magnetic sheets 6, 6a, acting as duplicate records of the main record by means of a rotary support plate and a co-operating transducing head, the sheets 6, 6a and the main record 1 are provided with a central hole 4 and registering holes 5 to effect correct registering of the sheets and to establish a driving connection with, and location on, the rotary support plate. The sheets may be square and be joined at two edges 8 and have notches 7 to facilitate location and removal of the main record 1, which is also provided with ears 2 for that same purpose.
GB34212/54A 1953-11-25 1954-11-25 Improvements in or relating to magnetic duplicate sound recording units Expired GB766610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR323038X 1953-11-25

Publications (1)

Publication Number Publication Date
GB766610A true GB766610A (en) 1957-01-23

Family

ID=8890294

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34212/54A Expired GB766610A (en) 1953-11-25 1954-11-25 Improvements in or relating to magnetic duplicate sound recording units

Country Status (2)

Country Link
CH (1) CH323038A (en)
GB (1) GB766610A (en)

Also Published As

Publication number Publication date
CH323038A (en) 1957-07-15

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